The electrical activity emanating from the brain creates frequencies called brainwaves.

  Brainwave frequencies are measured in Hertz (Hz), meaning cycles per second. The more cycles per second, the greater the Hertz value.

  There are four major categories of brainwaves ranging from the most activity to the least activity. These are: BETA, ALPHA, THETA and DELTA.

  Each image below depicts a one second snapshot of human brainwave activity, as detected by an electroencephalogram (EEG). As you'll notice, greater values indicate more brainwave activity within the one second time-frame.

  BETA BRAINWAVES are characteristic of an engaged mind, which is highly alert and well focused.

   Beta activity is quick-connect, fast activity and tends to dominate the normal waking state of consciousness when-attention is directed towards the outside world.

  Typically detected in the frontal lobes (where decisions are managed), Beta is usually seen on both sides of the brain in geometric distribution. It may be absent or reduced in areas of brain damage. It is generally regarded as a normal rhythm and tends to be the dominant rhythm in those who are alert, anxious or have their eyes open.

  Beta brainwaves are engaged when the brain is aroused or processing activities, such as:

  ALPHA BRAINWAVES are slower than beta and can represent a relaxed awareness in the mind.

   This rhythm is seen when the brain sets itself to rest or reflect. Alpha rates are increased by closing the eyes and relaxing, yet are offset by opening one's eyes or any concentrated effort.

   Alpha is usually best detected in the frontal regions of the head, on each side of the brain. Alpha is the major rhythm seen in normal relaxed adults and is typically regarded as the common relaxation mode beyond the age of 13.

  Alpha brainwaves move towards deep relaxation, imagination and intuitive thinking, as they accompany:

  THETA BRAINWAVES can indicate drowsiness, daydreaming, the first stage of sleep or 'indirect' imagination/thinking.

  Theta activity is not often seen in awake adults (unless engaged in a meditative practice), but is perfectly normal in alert children up to 13 years and in most sleep.

  A Theta state can be regarded as a gateway to hypnagogic states that lay between being awake and falling asleep. Often Theta entrainment can promote vivid flashes of mental imagery as one becomes receptive to brain/mind information beyond one’s typical conscious awareness. Theta has also been identified as a part of learning, memory and reductions in stress.

  Theta brainwaves are often related to:

  DELTA BRAINWAVES can reveal deep sleep or slow-wave 'background' thinking.

   Much like bass sound, Delta tends to be the highest in amplitude and the slowest waves. Delta is often associated with deep sleep. Certain frequencies, in the delta range, have been shown to trigger the body's healing and growth mechanisms.

  Interestingly, Delta is the dominant rhythm in infants up to one year, as well as stages 3 and 4 of dreamless sleep.

  Delta brainwaves are often related to and indicate:

  It is important to note that the brain does not operate on one frequency range at any given time.

  All four rates occur at once, yet at varying amplitudes. A good analogy would be to relate each brainwave state to a sting on a violin. All four strings make notes, yet one or more strings can dominate the overall sound at a greater volume.

  The design of the Brain Evolution System lends itself to driving multiple rates at once, allowing you to entrain to a broad range of brainwave rates within each level.

To learn more about how the Brain Evolution System utilizes all four
major brainwave rates throughout the system, Click Here!

To view the brainwave results of a first time BrainEv listener, Click Here!